[Hallb-engineering] [New Logentry] Follow-up Re: Follow-up Re: Follow-up Re: Saclay Target

kashy at jlab.org kashy at jlab.org
Wed Nov 8 21:30:02 EST 2017


Logentry Text:
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At ~21:12 The cryostat finally got truely empty even thought it read 0.1% at  20:44. This means that there is a lot of helium below the helium level probe. So if we want to we can make the minum level of the batch fills much lower than we have been. At a depletion rate of 62% in 32 minutes, I estimate that the effective empty LL is about -52% so running the batch fill down to 20% or 30 % would be reasonable and would likely reduce the helium consumption thus reducing the load on the ESR.

I shut JT_2K and reopened FV5KH to continue heating the target.

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